Cold showers change my life in ways I did not expect. Besides all the health benefits, the psychological benefits are astounding. I only wish I had access to ice baths and cryo tanks! It is a traditional kundalini yoga practice as well as a Siberian kindergarten activity.

Hack your brain for fun and profit with tDCS. This post also references reports on the positive effects tDSC is having with autistics. Warning: If you plan on doing this yourself, RTFM (read the freaking manual! Links provided)